dinsmore



No. 65,262. Patented Dec. 6, I898. J. H. R. DINSMDRE.

FIRE EXTINGUISHING SPRINKLER.

(Application filed Nov. 18, 1897.) (No Model.) l 2 Sheets-Shoot l.

W/ TNESSES No. 6l5,262. Patented Dec. 6, I898.

J. H. R. DINSMURE. FIRE EXTINGUISHING SPRINKLER.

(Application filed Nov. 13, 1897.\ (No Model.)

2 Sheets-Sheet 2.

k I a UNITED: STATES PATENT OFFICE.

JOHN H. R. DINSMORE, OF LIVERPOOL, ENGLAND, ASSIGNOR T WILLIAM HENRYDAVIES, OFMANCHESTER, AND JOHN EDWARD LEES, OF ROM-I- LEY, ENGLAND.

FIRE-EXTIINGUISHING, SPRINKLER.

SPECIFICATION forming part of Letters Patent No. 615,262, dated December6, 1898- Application filed November 13, 1897. Serial No. 658,416. Nomodel.)

To all whom it may concern: from the Valve-body I) and which are formedBe it known that I, JOHN H. R. DINSMORE, thereon, and on the lower endof which is engineer, a subject of the Queen of Great Britformed a ringe, the inside of which is threadain and Ireland, residing at Liverpool,Enged and screws over the threaded neck d 5 land, have invented certainnew and useful formed on the caseroof 61. Through this Improvements inFire-Extinguishing Sprinneck (1 the valve-stem 0 passes and is guidedklers, of which the following isaspecification. by it. The lowerdiaphragm of the device a The class of fire-extinguishing apparatus tois supported from the case (1 by an open ringwhich this inventionrelates isthat of the auframe g, the central part g of which is bored,10 tomatic-sprinkler type which is fixed at dif and through the hole apine on the lower ferent points at or near the ceiling or roof ofdiaphragm passes and is secured by a nut a a room or building and isadapted to be autowhich holds the diaphragm device down on niaticallyset in action and discharge water the frame 9. The frame g is held inposition into such room or space when the temperain a suitable seat inthe case at by the spring- 15 ture of the room at the part where it. orthey wire h, which fits in an annular groove in the is or are disposedreaches a certain point case, as shown, under the frame, such ring andthe particular kind of this class of autobeing split at h and sprunginto position. matic extinguishing apparatus to which this Between thediaphragm device a and the invention has special reference is thathavroof d a pad or wad 11, of felt or other suit- 20 ing an expansibleand contractile diaphragable bad conductor of heat, is provided. Thismatic chamber and in which the vaporization has the effect of preventingthe device a beand expansion of a volatile fluid when the ing cooled toomuch and too rapidly by the heat around such device reaches a givenpoint cooling of the roof (1, due to the falling of causes the device toextend and open a valve water upon it when the apparatus is in action. 25 and water to be supplied and distributed. On the upper side of thedevice a there is a Drawings accompanying this specificationstrengthening-disk lo, which distributes pres- 7 5 illustrate theimproved automatic fire-extinsure and prevents undue strain coming uponguishing apparatus. parts of the device a.

In the drawings, Figure 1 is a sectional ele- Within the device a thereis a porous or ab- 3o vation in the normal position of rest. Fig. 2sorbent sheet of material Z and a plate 171., on

is a view showing the underside of the d'ewhich this material rests, andthis porous ma- 8o vice or apparatus. Fig. 3 is a sectional eleterial ischarged with asmall quantity of volavation showing the apparatus in itsopen and tile liquid of any known suitable kind which active position,and Fig. at is a plan. will evaporate at the temperature desired 3 5Referring to the drawings, ais a corrugated say from 95 to 120Fahrenheit.

diaphragmatic disk device consisting of up- The valve-stem 0 screws overa threaded per and lower corrugated disks. stud a on the upper diaphragmof the device I) is a valve-casing, and c a valve in it, the a, asshown, and has upon it between the devalve being rigidly connected withand opervice and the valve 0 a spraying or'distributo ated by the devicea through the valve-stem 0. ing device a, by which water is broken upand b is the neck of the valve-case, by which sprayed and distributed upand all around the apparatus is fastened to the pressure waas required,and this device at has an annuter-service pipe. lar portion 42 on itsunder side which fits d is a case around the outside of the device overthe guide-neck d and prevents water 45 a, by which such device issupported and to getting down between the valve stem c and which it isattached, and this case is carried the guide onto the device below andcooling it.

up over the upper side, forming a roof at d The valve 0 in the caseshown has a face to the device and inclosing it above. of vulcanizedfiber, leather, or the like bear- 6 are arms by which the case at iscarried ing upon an internal valve-seat, and the opening 0 of the valveis between the stem 0 and the seat.

The use and operation of the apparatus are as follows: The apparatus isplaced in buildings, rooms, or spaces-say, in the usual orcommonly-adopted positions-and when quiescent the parts will take theposition shown namely, the diaphragmatic device a will be collapsed andthe valve 0 upon its seat, with the pressure of water keeping it closedown on its seat and tight. Then when a fire takes place the heatresulting from it reaches the open under side of the device a and actsupon the volatile hydrocarbon liquid held in the alosorbent material Ztherein, andit becomes vaporized at the temperature desired. The effectof this is that pressure is created in the device a, and it becomesdistended in the manner shown in Fig. 3, and the valve 0 is therebyraised from its seat and opened, whereupon the water under pressurerushes downward and striking the sprayer n is distributed by it andsprayed about in all directions. Some of this water in falling downwardfalls upon the roof d, but it is prevented from acting upon the deviceathat is to say, while the temperature of this roof can be cooled by theWater falling upon it the temperatu re of the device a is not affectedby it, as the non-conductor materiali prevents this, and thus thetemperature of the device and its contents is unaffected by the water,and so the device a will be kept distended and the valve will be keptopen in spite of the falling water, and then when the fire isextinguished the valve will remain open by this means severalminutes-say from three minutes upward-and to get this afterfiow anddistribution of water in a self-stopping sprinkler it is found necessaryto protect the expanding and contracting device from cooling effect fromabove in the manner described.

\Vhen the fire is extinguished, the vapor of the volatile spirit in acondenses and is absorbed by the pad 11, which is held in the tray m,and the diaphragms of the device collapse, and thereby bring down thevalve 0 again onto its seat, and so stops or cuts off the flow of water.

What is claimed in respect of the hereindescribed invention is- 1. In anautomatic self-stopping fire-extinguishing apparatus, a diaphragmaticdevice and covering-case, a valve-spindle passing up through a neck onsaid case, a water distributing or spreading disk device 12, on whichthe water strikes, and a part at below on n, which prevents waterfrompassing down onto the diaphragm device.

2. In combination with the covering-case d d having thedownwardly-extending flange, the ring-frame g fitting in the lower partof said cover-case, the separable diaphragm having its lower partresting on the ring-frame g, the upper supporting-frame, the valvetherein and the stern extending from the diaphragm to the valve withmeans for holding the ring-frame in place.

3. In combination with covering-case (Z d having the depending flange,the two-part diaphragm, the valve connected therewith, the ring-frame atthe lower end of the covering-case having a boss receiving the stem ofthe lower part of the diaphragm and the spring-ring for supporting thering-frame in place, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- \Vitnesses:

ERNEST R. RoYs'roN, JOHN H. WALKER.

